ZyXEL Communications XS3800-28, User Manual, Page: 206 / 789

Chapter 28 Switch Setup
XS3800-28 User’s Guide
206
C
HAPTER
28
Switch Setup
28.1 Switch Setup Overview
Use this screen to do the Switch’s basic setup configuration, for example, VLAN (Virtual Local Area
Network) type, enabling switching protocols, and MAC learning aging time setup.
28.1.1 Introduction to VLANs
A VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical
networks. Devices on a logical network belong to one group. A device can belong to more than one
group. With VLAN, a device cannot directly talk to or hear from devices that are not in the same groups;
the traffic must first go through a router.
In MTU (Multi-Tenant Unit) applications, VLAN is vital in providing isolation and security among the
subscribers. When properly configured, VLAN prevents one subscriber from accessing the network
resources of another on the same LAN, thus a user will NOT see the printers and hard disks of another
user in the same building.
VLAN also increases network performance by limiting broadcasts to a smaller and more manageable
logical broadcast domain. In traditional switched environments, all broadcast packets go to each and
every individual port. With VLAN, all broadcasts are confined to a specific broadcast domain.
Note: VLAN is unidirectional; it only governs outgoing traffic.
28.2 Switch Setup
Click SYSTEM > Switch Setup in the navigation panel to display the screen as shown. The VLAN setup
screens change depending on whether you choose 802.1Q or Port Based in the VLAN Type field in this
screen (in Standalone mode).